Nagra ACPS Owner'S Instruction Manual Download Page 6 | Manualshive

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Nagra ACPS Owner'S Instruction Manual Download Page 6

6

Basic Operations

NAGRA PL–L and the ACPS power supply

Connecting the “ACPS” AC Power Supply

Verify that the main selector on the front panel of the PL-L is set to OFF. The male
Lemo connector of the ACPS AC power supply unit can be connected to the female
input socket, marked POWER IN, on the right side panel of the PL–L. The Lemo
connector has a red dot that should be oriented face upwards when inserting into
the socket. Fully seat the connector in the socket.

Basic Operations

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Summary of Contents for ACPS

Page 1: ...ifier Owner s Instruction manual NAGRAVISION SA KUDELSKI GROUP Route de Genève 22 CH 1033 Cheseaux Switzerland Phone 41 0 21 732 0101 Fax 41 0 21 732 0100 E mail info nagra com All rights reserved May 2003 P N 2055002151 ...

Page 2: ... Identification and Location 8 Remote Control 10 Tube Jumpers and timer positions 12 Burn in Period 12 Left Panel Input Layout 13 Front Panel Control Layout 13 Right Panel Output Layout 15 Advanced Operations 17 Modulometer Calibration and its use 18 Output level attenuation 19 Hum 20 Specifications 23 Safety Compliance 24 Table of Contents ...

Page 3: ...ilitary businesses Since its inception in 1951 Nagra products continue to earn a reputation f or delivering the best possible sonic and mechanical performance under many very difficult operating conditions Numerous awards have been bestowed upon Nagra for its technical innovation excellence in design and flawless construction In building the PL L preamplifier significant effort has been focused on...

Page 4: ...ght costs as well as customs duty and other possible charges are at the customer s expense Our warranty remains valid in the event of emergency repairs or modification being made by the user However we reserve the right to invoice the customer for any damage caused by an unqualified person or a false maneuver by the operator We decline any responsibility for any and all damages resulting directly ...

Page 5: ...h precision modulometer provides the facility to accurately monitor match and balance output levels o The outputs of the PL L are directly coupled to the output vacuum tubes for the highest audio performance There are two Asymmetrical sets of connectors to allow bi amp setups and 1 optional symmetrical output o An optional remote control for selecting the different input sources adjusting balance ...

Page 6: ...nel of the PL L is set to OFF The male Lemo connector of the ACPS AC power supply unit can be connected to the female input socket marked POWER IN on the right side panel of the PL L The Lemo connector has a red dot that should be oriented face upwards when inserting into the socket Fully seat the connector in the socket Basic Operations ...

Page 7: ...Input Voltage 90 132 and 180 264 Volts AC o Frequency 50 60 Hz If the PL L does not turn ON this indicates that a faulty condition exists with the following possibilities The male Lemo connector of the ACPS is not properly connected and or seated in the socket of the PL L The internal fuse F1 on the motherboard of the PL L has blown Please refer to an authorized NAGRA agency for the repair If the ...

Page 8: ...mance Two types of vacuum tubes are used o 12 AT 7 ECC 81 o 12 AX 7 ECC 83 Many variants of these vacuum tube types are available and may function in the PL L However proper selection and use of vacuum tubes other than those supplied by Nagra is at the owner s responsibility If the PL L is damaged due to the use of non factory selected vacuum tubes the warranty will be rendered null and void The P...

Page 9: ...ubes became unseated in transit please refer to the following diagram to identify the vacuum tube required at each socket position and place them in the manner described above The PL L is also furnished with 1 vacuum tube usage timer It is mounted internally on the printed circuit board as shown on page 12 When the power is turned on this usage timer will time the usage of the vacuum tubes up to t...

Page 10: ...djustments Mute Pressing once on the mute button the PL L output is muted Pressing once the line input A to D button the outputs are enabled ON OFF When the OFF button is pressed the PL L switches to the standby position if the main selector is in the fully clock wise position Remote position R Only the power to the remote control receiver stays on When the ON button is pressed the PL L switches b...

Page 11: ...rom the PL L following the instructions described under paragraph Vacuum Tube Identification and Location Locate the Remote receiver board in the right corner towards the front panel Locate the 5 jumpers ST1 The PL L is factory set to work as product number 1 The following positions can be set 1 2 3 4 5 Product number 5 1 2 3 4 5 Product number 1 1 2 3 4 5 Product number 2 1 2 3 4 5 Product number...

Page 12: ...l allow all components within the circuits to reach a level of operating equilibrium At the end of this period the mechanical and sonic performance of the PL L will have had an opportunity to reach its full performance potential Serious audition and permanent installation options should only be evaluated after a complete burn in has occurred Timer Balanced output transformers ECC83 ECC83 ECC81 Jum...

Page 13: ...ground post is provided for the connection of a ground source to eliminate possible ground loops which can lead to hum To connect input sources ensure that the PL L is powered off or muted and insert the corresponding connector into the line connectors Front Panel Control Layout Main rotary switch Mono Stereo selector switch Output level potentiometer Balance potentiometer Modulometer Brightness p...

Page 14: ...s and pops and surge voltages at the output stage This stays identical if from power off line B C or D was selected LINE B Line B input is selected Power is supplied to all active electronic stages LINE C Line C input is selected Power is supplied to all active electronic stages LINE D Line D input is selected Power is supplied to all active electronic stages FULL CLOCK WISE POSITION R This is the...

Page 15: ...ition the needle indicates the correct DC input voltage green area Factory adjusted for 12V green area center position o Line Mute switch This is a 3 position switch The functions are as follows In the upper position output is directed to the Line output 1 RCA connectors on the right side panel In the middle position output is muted In the lower position output is directed to the Line output 2 XLR...

Page 16: ...e internal jumpers for output level is covered in Configuration guidance Output Customization To gain access to the inside of the PL L case ensure that the PL L is powered off disconnect the ACPS power supply unit and remove the top plate by removing the four hex screws using the supplied ISO Allen 2 5 mm key Lift the top plate off the PL L case carefully If the unit has just been powered off plea...

Page 17: ...es into consideration the strongest positive or negative value It is equipped with a memory so that with very brief signals the pointer advances and stays for a sufficient time in order for a reading to be taken The modulometer measures signals that can affect systems prone to overloading such as amplifiers and radio transmitters It shows signal peaks that would saturate an average value of the si...

Page 18: ...the power supply o A written legend 0 dB 1 0 V printed on the lower center portion of the dial on the instrument reminds the user that all markings are referenced to 0 dB 1 0 Volt on the output connectors The modulometer can be used to adjust the volume and balance potentiometers for reaching o A proper balance between left and right channels o Recorded level differences between various recordings...

Page 19: ...t signal at Line A Line B Line C or Line D input connectors will register 0 dB on the modulometer scale and produce a 1 0 V output signal at the output connectors factory adjusted Block diagram Output level attenuation The PL L is factory set to 0 dB output level position 2 3 If the output level is too high it can be attenuated by 20 dB by moving the 4 jumpers to the position 1 2 See figure ...

Page 20: ...uched in principle without any risk Normally these two wires carry an identical current one being the return of the other The third wire the ground earth allows all the chassis of all the equipment in the installation to be linked together It constitutes a security in the event that one of the pieces of equipment has a break in the isolation of the phase In principle this wire carries no current a...

Page 21: ...ire installation from one single wall socket and avoid connecting any equipment that is not linked to the installation to this power source i e spotlights etc In this example both the humidifier and the spotlight should not be connected to the same plug From your single power socket try as much as possible to use single point connection rather than multi point see below Humidifier PL L Amplifier S...

Page 22: ... lowest power consumer Equally the units using high level audio signals together and those with lower levels together as indicated in the diagram below CORRECT connection diagram These few basic indications allow you to start in the correct direction for obtaining the best from your system with your PL L CD Player PL L DVD Power Amplifier CD Player PL L DVD Power Amplifier CD Player PL L DVD Power...

Page 23: ...r 0 dB out 25 Vrms Dynamic range 100 dB 12 dB output Bandwidth 20 Hz 100 kHz 0 1 dB Distortion 0 02 1 V out no load at 1 kHz 0 10 2 V out 600 Ohm load Physical 2 12AX7 ECC83 Vacuum tubes 1 12AT7 ECC81 1 5 000 hour usage timer Power consumption 12 V 900 mA Width 12 2 310 mm Dimensions Depth 10 0 254 mm Height 3 0 76 mm Weight 7 lbs 3 20 kg Specifications ...

Page 24: ...inal EN 61000 4 3 Immunité aux champs électromagnétique EN 61000 4 3 Immunity to electromagnetic fields EN 61000 4 2 Immunité aux décharges électrostatiques EN 61000 4 2 Immunity to electrostatic discharges Par la présente nous déclarons l équipement conforme aux exigences de protection de la Directive européenne 89 336 CEE relative à la compatibilité électromagnétique pour environnement commercia...

Page 25: ...KUDELSKI S A CHESEAUX SWITZERLAND All specifications contained in this publication are subject to change at any time without prior notice following improvements and or modifications of the equipment COPYRIGHT RESERVED FOR ALL COUNTRIES PRINTED IN SWITZERLAND ...

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